diff --git a/.jules/sentinel.md b/.jules/sentinel.md
new file mode 100644
index 0000000000..ccec0563fc
--- /dev/null
+++ b/.jules/sentinel.md
@@ -0,0 +1,4 @@
+## 2024-05-24 - [Path Traversal in API Files Get]
+ **Vulnerability:** Unrestricted file path loading in `/api/files/get` allowing users to read any file on the machine like `/etc/passwd`.
+ **Learning:** Paths weren't validated against the application's base directory before reading them to standard response outputs.
+ **Prevention:** Use explicit checks like `files.is_in_base_dir(external_path)` to ensure paths cannot traverse outside intended bounds.
diff --git a/api/api_files_get.py b/api/api_files_get.py
index b2533f4f4f..ec24d570b9 100644
--- a/api/api_files_get.py
+++ b/api/api_files_get.py
@@ -62,6 +62,11 @@ async def process(self, input: dict, request: Request) -> dict | Response:
                         external_path = path
                         filename = os.path.basename(path)
 
+                    # Security: Prevent path traversal
+                    if not files.is_in_base_dir(external_path):
+                        PrintStyle.warning(f"Access denied to file outside base dir: {path}")
+                        continue
+
                     # Check if file exists
                     if not os.path.exists(external_path):
                         PrintStyle.warning(f"File not found: {path}")